328513 has 2 divisors, whose sum is σ = 328514. Its totient is φ = 328512.

The previous prime is 328511. The next prime is 328519. The reversal of 328513 is 315823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278784 + 49729 = 528^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 328513 - 2¹ = 328511 is a prime.

Together with 328511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (328511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164256 + 164257.

It is an arithmetic number, because the mean of its divisors is an integer number (164257).

328513 is a Friedman number, since it can be written as (8^2+5)^3+3+1, using all its digits and the basic arithmetic operations.

2³²⁸⁵¹³ is an apocalyptic number.

It is an amenable number.

328513 is a deficient number, since it is larger than the sum of its proper divisors (1).

328513 is an equidigital number, since it uses as much as digits as its factorization.

328513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 328513 is about 573.1605359757. The cubic root of 328513 is about 69.0002800521. Note that the first 3 decimals are identical.

It can be divided in two parts, 328 and 513, that added together give a square (841 = 29²).

The spelling of 328513 in words is "three hundred twenty-eight thousand, five hundred thirteen".